1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Maksim231197 [3]
3 years ago
11

Answer 1 and 2 for brainliest

Mathematics
1 answer:
nexus9112 [7]3 years ago
3 0
Roll a 6 and head or roll a 6 and a tails
You might be interested in
An automobile manufacturer has given its van a 31.3 miles/gallon (MPG) rating. An independent testing firm has been contracted t
Fynjy0 [20]

Answer:

z=\frac{31.1-31.3}{\frac{1.3}{\sqrt{140}}}=-1.82  

The p value for this case would be given by:

p_v =2*P(z  

For this case since the p value is higher than the significance level we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true mean is not significantly different from 31.3 MPG

Step-by-step explanation:

Information given

\bar X=31.1 represent the sample mean  

\sigma=1.3 represent the population standard deviation

n=140 sample size  

\mu_o =31.3 represent the value that we want to test  

\alpha=0.02 represent the significance level for the hypothesis test.  

z would represent the statistic

p_v represent the p value

Hypothesis to test

We want to test if the true mean is equal to 31.3 MPG, the system of hypothesis would be:  

Null hypothesis:\mu =31.3  

Alternative hypothesis:\mu \neq 31.3  

Since we know the population deviation, the statistic is given by

z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}} (1)  

Replacing we got:

z=\frac{31.1-31.3}{\frac{1.3}{\sqrt{140}}}=-1.82  

The p value for this case would be given by:

p_v =2*P(z  

For this case since the p value is higher than the significance level we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true mean is not significantly different from 31.3 MPG

4 0
3 years ago
What is the vertex of the graph of the function f(x) = x2 − 4x?
Vsevolod [243]

Answer:

(2, -4).

Step-by-step explanation:

x^2 - 4x

= (x - 2)^2 - 4.

So the vertex is at

(2, -4).

6 0
3 years ago
Read 2 more answers
The measure of one interior angle of a regular 90-sided polygon.
schepotkina [342]

9514 1404 393

Answer:

  176°

Step-by-step explanation:

The total of exterior angles is 360°, so one of those for the regular polygon will be 360°/90 = 4°. The adjacent interior angle is the supplement of this.

The interior angles measure 180° -4° = 176°.

6 0
3 years ago
26 inches long is how many yards long
Irina-Kira [14]
Since there are 3 feet to a yard,26 feet= 26/3 yards =8 2/3 yards
5 0
3 years ago
The Chic Boutique has a sale of school spirit clothing. The table shows the regular price, r, and the
maw [93]

Answer:

A

Step-by-step explanation:

I took the test

7 0
3 years ago
Other questions:
  • A ________________________________ is a range of values within which it is probable that the true value of a parameter (e.g., a
    13·1 answer
  • I am in the same row as 83 you say me when you start at 10 and count by tens.
    14·1 answer
  • If a = 5i - 6j and b = -2i + 4j , find -3a + 2b
    15·1 answer
  • PLEASE HELP ASAP !!
    9·2 answers
  • Find the surface area. Show work.
    10·2 answers
  • Mason wants to play with Maliyah's Doll House, but first he needs to stop at the clubhouse. If all
    12·2 answers
  • Find the value of x so that the polygons have the same perimeter.
    9·1 answer
  • Can Wendell make a triangular garden using pieces A, B, and F? Why or why not?
    7·2 answers
  • PLSS HELP
    13·1 answer
  • Which is a possible turning point for the continuous
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!